09FordFX4

Ok thanks.
I don't actually have the truck yet, so I can't really do anything yet anyways. Just getting ideas so I know what to budget for. Max I wanna spend is $5-6k
Truck is 1500.

fordfan77

MAF= mass air flow, it measures the air in modified engines much better than the speed density air sensor in your truck now. MAF became standard in F150's in 95 or 96. If you could find a used 351 Lightning motor, it would be a great platform to improve on and would make great power with a few bolt-ons, it shouldn't break the bank either, the main difference between that and the regular 351 is the gt-40 heads, cam, intake, MAF, and they came with a stronger tranny.

The gt-40 heads should be a direct replacement, that's the same heads that are on the 351 Lightning.

09FordFX4

So would a MAF conversion add HP and MPG?

flareside_thunder

MAF has nothing to do with the size of the injectors or TB.

The pistons were also different, the blocks were non-roller, they were NOT MAF and they did not have a modified trans. The 302 used 7/16 headbolts and the 351W used 1/2 head bolts.

Yes and yes. The MAF is a more finite way of tuning your engine to run at it's best. It takes alot more measurements on different aspects via sensors and tunes the ECM justly.

09FordFX4

Alright thanks folks.
How much do you think I'd be looking at for a tranny rebuild. $2000?

flareside_thunder

For an E4OD? Yes, right around there....give or take a few hundred.

qdeezie

Look at the roller rocker arms. That is a huge reduction in friction which could possibly free up mpgs. I'm looking at the 1.6 pedestal mount roller rockers for my 302 rebuild.

0927

I did a rebuild on a '87 Roller 5.0 some years ago for a truck. I had a total of 0.017 shaved from head/ deck surface to slightly raise compresion, ported the exhaust ports to remove all obstructions. Blue Racer RV roller cam, if I recall intake lift was around .490, exhaust .510 with the 1.7 rockers I used. ARP fastners on rods, mains head & FRP oil pump drive, high volume oil pump. The engine had 125,000 prior to rebuild. It did not require boreing or cutting the crank so everything was std/std, rods were polished and resized. I did not have it run on a dyno but power was very impressive, I got 21 mpg hwy with the 2wd F150.
I rebuilt a 351W pretty close to those same specs ( it did need bored, 0.030) for a buddy, he is very happy with it, claims 17 mpg with his '92 F150 4x4. The added compression makes a big difference in torque and throttle responce, but runs best with 92+ octane gas.

Cost for the 5.0 rebuild was less than a $1500, cost on the 351W was $1200. All the machine work was done by a local NAPA Machine Shop. The 351W was not a roller, so the cam kit was a lot cheaper.

Both engines are still running strong, the 5.0 has 75,000 since rebuild.

fordfan77

I didn't say lightnings had modified trannies, I said they had a stronger one, which was the e4od that had a higher stall torque converter than regular 351's (not the aod common with 302's) and they did use gt-40 heads. They also had different intakes than the normal 351.

And all 95-96 f150 351's had the e4od and MAF (or mass air), look it up...

Below is an excerpt from fordmuscle.com about MAF conversion, read the full article at http://www.fordmuscle.com/archives/2...AirConversion/

"Planning the Conversion
There are several ways to go about making the conversion on 1987 to 1993 pickups or Broncos. However the preferred method largely depends on the type of transmission you have. If your truck has the E4OD automatic transmission (typical on the 351 and 460 equipped trucks and 93-95 Lightnings) then you have to consider that this transmission is controlled via the engine's computer. The most common mass air conversion calls for using the 88-93 Mustang computer, which does not have E4OD control. The options in this situation are to use a 1995 or 1996 F-150 or Bronco computer, as by that year the trucks were mass-air and all running E4OD's. "

flareside_thunder

Saying that they have a stronger tranny implies modification. The 302 also got the AODE, precursor to the 4R70W. Yes, I know they used GT40 heads....I snagged a set for my 302. Yes, they use a different intake...it's basically a mustang cobra lower. The upper is similar in design to the Explorer upper but flows more. The lightning was also rated at 240hp. A whopping 25 more HP than a standard 351w.